<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./浮动布局练习.css">
</head>

<body>
    <div class="container clearfix">
        <div class="top clearfix">
            <div class="logo lf">logo</div>
            <div class="banner lf">banner</div>
            <div class="banner2 lf">banner2</div>
        </div>
        <div class="menu">菜单</div>
        <div class="content  clearfix">
            <div class="content-left clearfix lf">
                <div class="section1 lf">栏目一</div>
                <div class="section1 lf">栏目二</div>
                <div class="section2 lf">栏目三</div>
                <div class="section2 lf">栏目四</div>
                <div class="section2 lf">栏目五</div>
                <div class="section2 lf">栏目六</div>
            </div>
            <div class="content-right clearfix lr">
                <div class="section3">栏目七</div>
                <div class="section3">栏目八</div>
                <div class="section3">栏目九</div>
            </div>

        </div>
        <div class="footer">页脚</div>
    </div>

</body>

</html>